Mr Varadkar seemed disappointed to learn the scene was not "actually" filmed there.

Despite opening his post-meeting remarks with a freakish reference to the rom-com, Mr Varadkar soon had to address more serious matters - the various tragedies that have struck Britain in recent weeks.

Upon arriving at 10 Downing Street, Varadkar said he was reminded of a specific scene from a famous film.

"I want to renew the close bond and strong relations that exist between Ireland and the United Kingdom". Even this morning, an atrocity in Finsbury Park, on top of what's happened on London Bridge.

Varadkar went on to thank May for facilitating the meeting at short notice and said that it reinforced the relationship between the two countries.

"We passed the Grenfell Tower on the way in and saw the destruction that has occurred there".

"London is a very important city for Irish people", he added. "When there is an attack on London, we feel in Ireland that is nearly an attack on us as well.".

Mr Varadkar also pledged his support to the British people saying: "I want you to know you have our support and solidarity, if there is anything we can do to assist, we're ready and willing to do so".

"The two immediate challenges facing Leo Varadkar's administration are Brexit and re-establishing the institutions in the North".

May, who said that talks with the DUP were ongoing, and Varadkar also reiterated that they wanted the border between Northern Ireland and the Republic of Ireland to be as seamless as possible once Britain has left the EU.

The DUP's deal to prop up the Tories at Westminster is also likely to be discussed at Downing Street.

Her comments follow warnings by the nationalist parties, Sinn Fein and the SDLP, and the cross-community Alliance Party, that a deal with the DUP would undermine the Government's attempts to restore the power-sharing executive at Stormont.